waves

Related Questions

• At what speed should a source of sound move so that stationary observer finds the apparent frequency equal to half of the original frequency

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• The speed of a wave in a medium is 760 m/s. If 3600 waves are passing through a point, in the medium in 2 minutes, then its wavelength is

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• The wavelengths of two waves are 50 and 51 cm respectively. If the temperature of the room is $20^o C$, then what will be the number of beats produced per second by these waves, when the speed of sound at $0^o C$ is 332 m/sec

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• Find the fundamental frequency of a closed pipe, if the length of the air column is 42 m. (speed of sound in air = 332 m/sec)

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• A source of sound is moving with constant velocity of 20 m/s emitting a note of frequency 1000 Hz. The ratio of frequencies observed by a stationary observer while the source is approaching him and after it crosses him will be (Speed of sound v = 340 m/s)

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